package day0519;

public class Test1 {
    double  pi=3.14;
    char    color='红'; //一个符号
    String  name="小明";
    boolean    c=  pi>0;
    //boolean  c=  true;
    boolean  co=false;
    int age=4;
    public static void main(String[] args) {
        long n=3147483647L;
        System.out.println(Long.toBinaryString(n));
    }
}